Billback or bill back is an accounting service or suite of software that is used for cost recovery.
With a billback system, the client or payer is charged a percentage of the total cost of equipment, services, and venues of which they have already used.
Billback systems track usage from concert halls to toothpicks, add the costs up, divide it all out, and calculate the price per usage by hours, minutes, seconds, pieces, visits, clicks, views etc.
Computerized billback systems are useful for occasions that were traditionally difficult to keep track of and where costs were covered with a blanket revenue.
This in turn assists in making future investment choices.